پودمان:WikidataIB

از ویکی‌پدیا، دانشنامهٔ آزاد
پرش به ناوبری پرش به جستجو
توضیحات پودمان[نمایش] [ویرایش] [تاریخچه] [پاکسازی]

This module is designed specifically to implement a mechanism which moves control of whether Wikidata values are used in an infobox from the template coder at the infobox design level to the editor at the article level. It is only intended to be used inside an infobox.

One of the three sandboxes should be used for testing anything other than trivial amendments.

Test cases for the main module and two of the sandboxes are available.

Modules and test cases
Module Test cases
Main پودمان:WikidataIB Module talk:WikidataIB/testing
sandbox Module:WikidataIB/sandbox (diff) Module talk:WikidataIB/sandbox/testing (diff)
sandbox1 Module:WikidataIB/sandbox1 (diff) Module talk:WikidataIB/sandbox1/testing (diff)
sandbox2 Module:WikidataIB/sandbox2 (diff)

Overview[ویرایش]

The module provides these calls specifically for use in infoboxes at present:

  1. getValue
    getPreferredValue - obsoleted: use getValue|rank=best instead.
  2. getCoords
  3. getQualifierValue
  4. getValueByQual
  5. getValueByLang

The obsolete call getSourcedValue has now been removed as it is redundant to getValue which can do the same job using the |onlysourced=true parameter (which is set by default).

There are also these utility calls:

  1. getLink
  2. getLabel
  3. getAT
  4. getDescription
  5. pageId
  6. formatDate
  7. checkBlacklist
  8. emptyor
  9. labelorid
  10. getLang
  11. getQid

Example form of each call:

{{#invoke:WikidataIB |getValue |<PropertyID> |name=<fieldname> |suppressfields=<list of fields which will never display> |fetchwikidata=<list of fields to fetch values from Wikidata> |onlysourced=<yes/no> |noicon=<yes/no> |df=<dmy/mdy/y> |bc=<BC/BCE> |qual=<ALL/DATES/P999> |list=<ubl/hlist/prose> |linked=<yes/no> |<local parameter>}}
{{#invoke:WikidataIB |getCoords |name=<fieldname> |suppressfields=<list of fields which will never display> |fetchwikidata=<list of fields to fetch values from Wikidata> |<local parameter>}}
{{#invoke:WikidataIB |getQualifierValue |<PropertyID> |pval=<ID of target value for the property> |qual=<qualifier ID for that target value> |name=<fieldname> |suppressfields=<list of fields which will never display> |fetchwikidata=<list of fields to fetch values from Wikidata> |onlysourced=<yes/no>}}
{{#invoke:WikidataIB |getValueByQual |<PropertyID> |qualID=<qualifier property ID to match> |qvalue=<QID of target value for the qualifier property> |name=<fieldname> |suppressfields=<list of fields which will never display> |fetchwikidata=<list of fields to fetch values from Wikidata> |onlysourced=<yes/no>}}
{{#invoke:WikidataIB |getValueByLang |<PropertyID> |lang=<language code to match> |name=<fieldname> |suppressfields=<list of fields which will never display> |fetchwikidata=<list of fields to fetch values from Wikidata> |onlysourced=<yes/no>}}


Function getValue[ویرایش]

Parameters to getValue[ویرایش]

Name Alias Function Default
(first unnamed) 1 The property-ID whose values are returned. Required.
(second unnamed) 2 A locally supplied value that, if it is not empty, will be returned in preference to the value on Wikidata. empty
qid The Q-number (entity-ID) of the entity that the property belongs to. If not supplied or empty, defaults to the associated Wikidata entry of the current page – uses mw.wikibase.getEntityIdForCurrentPage(). Item id for current page
rank [Case insensitive] When set to best, returns preferred values if present, otherwise returns normal values. When set to preferred returns preferred values. When set to normal, returns normal values. When set to deprecated returns deprecated values. Any parameter value beginning with "b" is "best"; beginning with "p" is "preferred"; beginning with "n" is "normal"; beginning with "d" is deprecated. Multiple values are allowed: "p n d" would return all ranks. "Best" overrides the other flags. Other values are ignored and if no ranks are requested, preferred and normal are returned. preferred and normal
qual The property-ID of a qualifier that is to be returned in parentheses after the property. Setting qual=ALL returns all qualifiers. Setting qual=DATES returns زمان آغاز (P580) and زمان پایان (P582) with a date separator. none
fetchwikidata fwd List of fields to fetch values from. ALL fetches all fields. A value of NONE or blank or omitting the parameter fetches no fields. none
suppressfields spf List of fields which will never display. This will even force a local value in the field not to display. none
name Name of the field. When encoding an infobox, this is the name that fetchwikidata and suppressfields will recognise. Required if fetchwikidata or suppressfields is specified (except when fetchwikidata=ALL). nil
onlysourced osd A boolean which will filter out Wikidata values that are unsourced or only sourced to Wikipedia. Values no, false and 0 are all false; anything else is true. true
df Date format: may be dmy (day before month) or mdy (month before day) or y (year alone). dmy
bc Format of the BC/BCE suffix for dates. BCE
linked A boolean that enables the link to a local page via its sitelink on Wikidata. Values no, false and 0 are all false; anything else is true. true
wdlinks wdl A boolean that enables the display of links to Wikidata when no local article exists. Values no, false and 0 are all false; anything else is true. false
unitabbr A boolean that enables unit abbreviations for common units. Values no, false and 0 are all false; anything else is true. false
maxvals Sets the maximum number of values to be returned when multiple values are available. Setting it to 1 is useful where the returned string is used within another call, e.g. image. Values 0 and empty return all values. 0 (all)
collapse Sets the maximum number of values to be returned before the content is auto-collapsed. Values 0 and empty allow all content to be displayed uncollapsed. 0 (all)
linkprefix A link prefix that is prepended to the linked value when linked. Applies only to items that have articles and to strings (e.g. url). It triggers linking of strings. Any double-quotes " are stripped out, so that spaces may be passed. empty
linkpostfix A link postfix that is appended to the linked value when linked. Applies only to items that have articles and to strings (e.g. url). It triggers linking of strings. Any double-quotes " are stripped out, so that spaces may be passed. empty
prefix A prefix that is prepended to the displayed value of strings (e.g. url). Any double-quotes " are stripped out, so that spaces may be passed. empty
postfix A postfix that is appended to the displayed value of strings (e.g. url). Any double-quotes " are stripped out, so that spaces may be passed. empty
qlinkprefix Qualifier link prefix (see linkprefix). empty
qlinkpostfix Qualifier link postfix (see linkpostfix). empty
qprefix Qualifier prefix (see prefix). empty
qpostfix Qualifier postfix (see postfix). empty
sorted A boolean which enables sorting of the values returned. Values no, false and 0 are all false; anything else is true. false
qsorted A boolean which enables sorting of the qualifier values within each item returned. Values no, false and 0 are all false; anything else is true. false
noicon A boolean which will suppress the trailing "edit at Wikidata" pen-icon. Useful for when the returned value is to be further processed. Values no, false and 0 are all false; anything else is true. false
list The name of a template that the list of multiple values is then passed through. Examples include "hlist" and "ubl". Setting it to "prose" produces something like "1, 2, 3, and 4" none
sep Customises the string that is used to separate multiple returned values. Any double-quotes " are stripped out, so that spaces may be passed. If nothing or an empty string is passed it is set to the default list separator (", " in English). ", "
qsep Customises the string that is used to separate multiple returned qualifier values. Any double-quotes " are stripped out, so that spaces may be passed. If nothing or an empty string is passed it is set to the default list separator (", " in English). ", "
format Determines whether global coordinates should be rendered as degree/minute/second or as decimal degrees. Any value beginning "dec" (case insensitive) will render as decimal. Anything else will render as DMS. dms
show Determines how global coordinates should be returned. The value "longlat" will return longitude, latitude. Any other value beginning "lon" (case insensitive) will return just longitude. Any value beginning "lat" (case insensitive) will return just latitude. When used with |noicon=true, all of these will be pure numbers in decimal degrees (signed: N and E as positive), which are intended for use in mapping templates, etc. Anything other value (or nothing) will render the usual coordinate values as DMS or decimal with "NSEW" qualifiers, etc. empty
lang Allows an unlinked value to be returned in the chosen language. Takes a standard ISO language code recognised by MediaWiki. If not supplied or blank, the local language (or set language for multi-lingual wikis) is used as normal. local language

Base parameters[ویرایش]

  • getValue can also take a named parameter |qid= which is the Wikidata ID for an article. This will not normally be used as omitting it defaults to the current article.
  • The property whose value is to be returned is passed in the first unnamed property and is required.
  • The second unnamed parameter, if supplied, will become the returned value and no call to Wikidata will be made.

Whitelist and blacklist[ویرایش]

  • The name of the field that this function is called from is passed in the named parameter |name=, which is first checked against a blacklist of fields that are never to be displayed, (i.e. the call must return nil in all circumstances). If the field is not on the blacklist, it is then checked against a whitelist. If the name of the field matches, the call will return any locally supplied value if it is supplied as the second unnamed parameter, or the Wikidata value otherwise.
  • Specifying |fetchwikidata=ALL is a shortcut to return all fields that are not blacklisted.
  • The name is compulsory when the blacklist or whitelist is used, so the module returns nil if it is not supplied, other than when |fetchwikidata=ALL.
  • The blacklist is passed in the named parameter |suppressfields=
  • The whitelist is passed in the named parameter |fetchwikidata=

Sourcing[ویرایش]

The getValue function will accept a boolean parameter onlysourced which will suppress return of Wikidata values that are unsourced or only sourced to Wikipedia. The absence of the parameter, an empty parameter (|onlysourced=) and the empty string ("") all default to true (i.e. only referenced values are returned). The values no, false and 0 are treated as false (i.e. all values are returned); any other value is true (although |onlysourced=yes/no is recommended for readability).

Link to Wikidata[ویرایش]

The getValue function will accept a boolean parameter noicon which will suppress the trailing "edit at Wikidata" icon and link for cases when the returned value is to be further processed by the infobox (e.g. a url). The absence of the parameter or an empty parameter (|noicon=) default to false (i.e. the icon is added). The empty string ("") and the values no, false and 0 are treated as false; any other value is true (although |noicon=true is recommended for readability).

Dates[ویرایش]

In order to handle the requirement for dates in mdy, dmy or just year formats, getValue accepts a named parameter |df= that may take the values "dmy", "mdy", or "y" - default is "dmy".

As an article may require either of suffixes BC and BCE, getValue accepts a named parameter |bc= that may take the values "BC", or "BCE" - default is "BCE". Some test cases are shown at Module talk:WikidataIB/testing #Calls to getValue for dates.

Ranks[ویرایش]

The |rank= parameter, when set to preferred, returns only preferred values; when set to normal, returns only normal values; when set to deprecated, returns only deprecated values. If the parameter is set to best, it returns preferred values if present, otherwise normal values. Any parameter value beginning with "p" is "preferred"; any parameter value beginning with "n" is "normal"; any parameter value beginning with "d" is "deprecated"; any parameter value beginning with "b" is "best". Combinations of values are allowed, e.g. |rank=p n returns all the preferred and normal values (which is the default), although "best" overrides any other parameters.

Specific value-type handlers[ویرایش]

The module has specific handlers for the following data types:

  1. Items that correspond to an article in some Wikipedia, called "wikibase-items". These will be linked to the corresponding (and disambiguated) article on English Wikipedia where possible.
  2. Items that represent dates. These may be centuries, years, years and months, or years, months and days.
  3. Items that represent Commons media, urls, external ids, or other sorts of plain text.
  4. Items that represent quantities. All of these may have an associated unit, or be dimensionless, and may have a range.
  5. Items that represent global coordinates. These will be in degrees of latitude and longitude and will have an associated precision.

Items that represent other types of data are not handled at present.

The third class of data types may be used with the parameters:

  • |prefix=, |postfix=, |linkprefix=, |linkpostfix=

If you don't supply at least one of |linkprefix= or |linkpostfix=, then just |prefix= and |postfix= are used. For example, when getting the شناسه در سازمان مرکز سیاره کوچک (MPC) (P717) in Vienna Observatory (Q532127):

  • {{#invoke:WikidataIB/sandbox|getValue|P717|fetchwikidata=ALL|onlysourced=no |prefix="before " |postfix=" after" |qid=Q532127}}خطای اسکریپتی: پودمان «WikidataIB/sandbox» وجود ندارد.

Use double-quotes to enclose the parameter value if it has leading or trailing spaces (otherwise they are stripped out). If you supply |linkprefix= or |linkpostfix=, then all four parameters are used and a link is made for each value like this:

  • [[ linkprefix WikidataValue1 linkpostfix | prefix WikidataValue1 postfix]], [[ linkprefix WikidataValue2 linkpostfix | prefix WikidataValue2 postfix]], etc.

That allows multiple links to be made to different sections of a list article, such as List of observatory codes. For example, when getting the شناسه در سازمان مرکز سیاره کوچک (MPC) (P717) in Vienna Observatory (Q532127) we can make the links:

  • {{#invoke:WikidataIB/sandbox|getValue|P717|fetchwikidata=ALL|onlysourced=no |prefix= |postfix= |linkprefix="List of observatory codes#" |linkpostfix= |qid=Q532127}}خطای اسکریپتی: پودمان «WikidataIB/sandbox» وجود ندارد.

The parameters |prefix=, |postfix=, |linkprefix=, |linkpostfix= are also applied to wikibase-items if they are linked.

Formatting multiple returned values[ویرایش]

  • |sorted=<yes|no> is a boolean passed to enable sorting of the values returned. No parameter, or an empty string, or "false", or "no", or "0" disables sorting. It's only a very dumb alphabetical sort and sorts linked values as "[[ ..."
  • |sep=<separator characters> allows the separator between multiple returned values to be defined. The default is ", " (comma plus normal space). If the separator has leading or trailing spaces, enclose it in double quotes (e.g. |sep=" - "). Any double quotes are stripped from the separator. The pipe character (|) must be escaped as {{!}}. For reasons of accessibility (see ویکی‌پدیا:شیوه‌نامه/دسترسی‌پذیری), do not use |sep=<br> for vertical unbulleted lists; use |list=ubl instead.
  • |list=<hlist|ubl> allows multiple returned values to be displayed as a horizontal list (|list=hlist), or a vertical unbulleted list (|list=ubl). These override the separator and do not display the 'pen icon' linked to "Edit at Wikidata"

Limiting the returned values[ویرایش]

Sometimes a property is expected to have a single value, such as نگاره (P18), but may have multiple values on Wikidata. Setting |maxvals=1 will limit the number of values returned to 1. Any other value is possible and functions as expected, but zero is treated as "no limit".

Unlinking[ویرایش]

A returned value that represents an article on the local wiki will be linked by default. This includes redirects, but not dab pages. Sometimes there is a need not to link that returned values and this may be accomplished by setting |linked=no.

Unit abbreviations[ویرایش]

When the returned value is a quantity, the name of the units in which it is expressed is appended. Infoboxes may wish to use abbreviations instead for common units. This can be done by setting |unitabbr=true.

Qualifiers[ویرایش]

A parameter |qual= may be supplied, which will return qualifiers of the required property, if they exist. If the value is set to a property id (P12345), then only the values of qualifiers with that property will be returned. If the value is set to |qual=ALL, then all of the qualifier values are returned. If the value is set to |qual=DATES then the زمان آغاز (P580) and the زمان پایان (P582) of the property are returned with a date separator. In each case, any qualifier values returned follow the property value, and are enclosed in parentheses. If multiple qualifier values are returned, they will be separated by commas by default, although the separator can be changed by specifying |qsep= (which may be enclosed in double-quotes, which are stripped out, so that spaces can be included). Setting the parameter |qsorted=yes will sort the returned qualifier values alphanumerically.

Short form of parameters[ویرایش]

Some of the longer parameters may be abbreviated to make infobox designs more compact:

  • fwd → fetchwikidata
  • osd → onlysourced
  • spf → suppressfields
  • wdl → wdlinks

Wrapper template[ویرایش]

The template {{wdib}} can be used as a convenient wrapper for {{#invoke:WikidataIB |getValue}}.

Other main functions[ویرایش]

Function getPreferredValue[ویرایش]

The getPreferredValue function works exactly like getValue, taking the same parameters, but if any values for a property have the preferred rank set, it will only return those values. This is now deprecated in favour of getValue|rank=best.

Function getCoords[ویرایش]

  • getCoords can also take a named parameter |qid= which is the Wikidata ID for an article. This will not normally be used as omitting it defaults to the current article.
  • The first unnamed parameter, if supplied, will become the returned value and no call to Wikidata will be made.
  • The coordinates from Wikidata are parsed and passed to الگو:Coord which returns the display as if it were called manually.
  • The blacklist of fields that are never to be displayed, and the whitelist are implemented in the same way as for getValue using |suppressfields= and |fetchwikidata=

Function getQualifierValue[ویرایش]

The getQualifierValue function is for use when we want to fetch the value of a qualifier. We need to know the property and the value of the property that the qualifier relates to. The parameters are:

  • The property ID passed in the unnamed parameter (or |1=)
  • The target value for that property in |pval=
  • The qualifier ID for that target value in |qual=
  • The same parameters to implement whitelisting and blacklisting of the property as in getValue
  • Optional boolean to specify whether only sourced values of the property are returned (defaults to "no") in |onlysourced=
  • Optional item ID for arbitrary access in |qid=
  • The same parameters to format output as in getValue

Example of getQualifierValue[ویرایش]

In تلسکوپ قطب جنوب (Q1513315) there is a property رخداد مهم (P793), which has a value ساخت‌وساز (Q385378). That has two qualifiers, زمان آغاز (P580) and زمان پایان (P582). To get the start date:

  • {{#invoke:WikidataIB |getQualifierValue |P793 |pval=Q385378 |qual=P580 |name=xyz |fetchwikidata=ALL }}

In تلسکوپ قطب جنوب it returns:

  • نوامبر 2006

Function getValueByQual[ویرایش]

The getValueByQual function returns the value of a property which has a qualifier with a given entity value. The parameters are:

  • The property ID passed in the unnamed parameter (or |1=)
  • The property ID for a qualifier (or "ALL" or "DATES") in |qualID=
  • The Wikibase-entity ID of a value for that qualifier in |qvalue=
  • The same parameters to implement whitelisting and blacklisting of the property as in getValue
  • Optional boolean to specify whether only sourced values of the property are returned (defaults to "no") in |onlysourced=
  • Optional item ID for arbitrary access in |qid=
  • The same parameters to format output as in getValue

Example of getValueByQual[ویرایش]

In گوشت (Q10990) there is a property آوا (فایل صوتی) (P443) that has multiple values, each of which has a qualifier زبان نوشته (P407). We can return the property value whose qualifier has the value انگلیسی بریتانیایی (Q7979)

  • {{#invoke:WikidataIB |getValueByQual |qid=Q10990 |P443 |qualID=P407 |qvalue=Q7979 |fwd=ALL |osd=no |noicon=true}}خطای اسکریپتی: پودمان «WikidataIB/sandbox» وجود ندارد.

Function getValueByLang[ویرایش]

The getValueByLang function returns the value of a property which has a qualifier زبان نوشته (P407) whose value has the given language code. The parameters are:

  • The property ID passed in the unnamed parameter (or |1=)
  • The MediaWiki language code to match the language whose code is given by |lang=xx[-yy]. If no code is supplied, it uses the default language.
  • The same parameters to implement whitelisting and blacklisting of the property as in getValue
  • Optional boolean to specify whether only sourced values of the property are returned (defaults to "no") in |onlysourced=
  • Optional item ID for arbitrary access in |qid=
  • The same parameters to format output as in getValue

Utility functions[ویرایش]

Function getLink[ویرایش]

getLink has the qid of a Wikidata entity passed as the first unnamed parameter or as |qid=

If there is a sitelink to an article on the local Wiki, it returns a link to the article with the Wikidata label as the displayed text. If there is no sitelink, it returns the label as plain text. If there is no label in the local language, it displays the qid instead.

Wikidata: Corisca and the Satyr (Q29016906) and باستان‌شناس (Q3621491)
  • {{#invoke:WikidataIB |getLink |Q29016906}} → Corisca and the Satyr
  • {{#invoke:WikidataIB |getLink |Q3621491}} → باستان‌شناس

Function getLabel[ویرایش]

getLabel has the qid of a Wikidata entity passed as the first unnamed parameter or as |qid=

It returns the Wikidata label for the local language as plain text. If there is no label in the local language, it displays the qid instead. Note that this is the label given to the Wikidata entry in the same language as the current Wiki, if the label exists.

Wikidata: Corisca and the Satyr (Q29016906) and باستان‌شناس (Q3621491)
  • {{#invoke:WikidataIB |getLabel |Q29016906}} → Corisca and the Satyr
  • {{#invoke:WikidataIB |getLabel |Q3621491}} → باستان‌شناس

Function getAT[ویرایش]

getAT has the qid of a Wikidata entity passed as the first unnamed parameter or as |qid=

If there is a sitelink to an article on the local Wiki, it returns the sitelink as plain text, i.e. the article title. If there is no sitelink, it returns nothing. Note that this is the title of the article in the current Wikipedia, if the interlanguage link exists in the Wikidata entry.

Wikidata: Corisca and the Satyr (Q29016906) and باستان‌شناس (Q3621491)
  • {{#invoke:WikidataIB |getAT |Q29016906}}
  • {{#invoke:WikidataIB |getAT |Q3621491}}

Function getDescription[ویرایش]

getDescription has the qid of a Wikidata entity passed as |qid= (it defaults to the associated qid of the current article if omitted). It has a local parameter passed as the first unnamed parameter. Any local parameter passed (other than "Wikidata" or "none") becomes the return value. It returns the article description for the Wikidata entity in plain text if the local parameter is "Wikidata". Nothing is returned if the description doesn't exist or "none" is passed as the local parameter.

Wikidata: Corisca and the Satyr (Q29016906) and باستان‌شناس (Q3621491)
  • {{#invoke:WikidataIB |getDescription |qid=Q29016906 |wikidata}}خطای اسکریپتی: تابعی «getDescription» وجود ندارد.
  • {{#invoke:WikidataIB |getDescription |qid=Q29016906 |A painting}}خطای اسکریپتی: تابعی «getDescription» وجود ندارد.
  • {{#invoke:WikidataIB |getDescription |qid=Q29016906 |none}}خطای اسکریپتی: تابعی «getDescription» وجود ندارد.
  • {{#invoke:WikidataIB |getDescription |qid=Q3621491 |wikidata}}خطای اسکریپتی: تابعی «getDescription» وجود ندارد.
  • {{#invoke:WikidataIB |getDescription |qid=Q3621491 |A profession}}خطای اسکریپتی: تابعی «getDescription» وجود ندارد.
  • {{#invoke:WikidataIB |getDescription |qid=Q3621491 |none}}خطای اسکریپتی: تابعی «getDescription» وجود ندارد.

Function formatDate[ویرایش]

formatDate accepts a datetime of the usual format from mw.wikibase.entity:formatPropertyValues, like "1 August 30 BCE" as parameter 1 and formats it according to the df (date format) and bc parameters.

  • {{#invoke:WikidataIB |formatDate | 1 August 30 BCE |bc=BCE |df=dmy}} → 1 August 30 BCE
  • {{#invoke:WikidataIB |formatDate | 1 August 30 BCE |bc=BC |df=mdy}} → August 1, 30 BC
  • df = "dmy" / "mdy" / "y" - default is "dmy"
  • bc = "BC" / "BCE" - default is "BCE"

Function checkBlacklist[ویرایش]

checkBlacklist allows a test to check whether a named field is allowed. It returns true if the field is not blacklisted (i.e. allowed) It returns false if the field is blacklisted (i.e. disallowed)

Example:

  • {{#if:{{#invoke:WikidataIB |checkBlacklist |name=nationality |suppressfields=residence; nationality; citizenship}} | not blacklisted | blacklisted}} → blacklisted
  • {{#if:{{#invoke:WikidataIB |checkBlacklist |name=birth_place |suppressfields=residence; nationality; citizenship}} | not blacklisted | blacklisted}} → not blacklisted

Function emptyor[ویرایش]

emptyor returns nil if its first unnamed argument is just punctuation, whitespace or html tags otherwise it returns the argument unchanged (including leading/trailing space).

If the argument could contain "=", then it must be called explicitly:

  • | 1 = whatever-the-argument-is

In that case, leading and trailing spaces are trimmed.

It finds use in infoboxes where it can replace tests like:

  • {{#if: {{#invoke:WikidataIB |getvalue |P99 |fwd=ALL}} | <span class="xxx">{{#invoke:WikidataIB |getvalue |P99 |fwd=ALL}}</span> | }}

with a form that uses just a single call to Wikidata:

  • {{#invoke |WikidataIB |emptyor |1= <span class="xxx">{{#invoke:WikidataIB |getvalue |P99 |fwd=ALL}}</span> }}

Function labelorid[ویرایش]

labelorid is a public function to expose the output of labelOrId().

The Q-number (entity ID) is passed as |qid= or as an unnamed parameter.

It returns the Wikidata label for that entity or the qid if no label exists.

Function getQid[ویرایش]

  • getQid works with the current page and its associated Wikidata entry.
  • It returns qid, if supplied as the first unnamed parameter or as |qid=;
  • failing that, the Wikidata entity ID of the "category's main topic (P301)", if it exists;
  • failing that, the Wikidata entity ID associated with the current page, if it exists;
  • otherwise, nothing

Function examine[ویرایش]

examine provides a dump of the entire property given in the first unnamed parameter (or in |pid= as a named alias) from the item given by the parameter 'qid', or from the item corresponding to the current page if qid is not supplied. It works in a similar manner to the پودمان:Wikidata function, but only loads a single claim, rather than the whole Wikidata entry.

  • Example: {{#invoke:WikidataIB |examine |qid=Q1396889 |P50}}

Function url2[ویرایش]

url2 takes a parameter url= that is a proper url and formats it for use in an infobox.

Examples: الگو:Nowiki template demoالگو:Nowiki template demoالگو:Nowiki template demoالگو:Nowiki template demo

Comparison with output of {{URL}}: الگو:Nowiki template demoالگو:Nowiki template demoالگو:Nowiki template demoالگو:Nowiki template demo

Coding into an infobox[ویرایش]

Typically, the getValue call will be invoked in an infobox definition, using appropriate template parameters. One simple implementation is given as an example in Template:Infobox book/Wikidata/Sandbox. As an illustration, the 'author' field in the infobox is coded like this:

| label2  = Author{{#if:{{{authors|}}}|s}}
|  data2  = {{#invoke:WikidataIB |getValue |P50 |name=author |fetchwikidata={{{fetchwikidata|}}} |suppressfields={{{suppressfields|}}} |{{{authors|{{{author|}}}}}} }}

The property to be fetched is the first unnamed parameter. In this case it is نویسنده (P50).

The name of the field is passed in |name= and that name is checked against the blacklist and the whitelist. To always suppress the author field in a particular article, an editor will set |suppressfields=author in the infobox. The author field will then never be displayed.

If the field is not blacklisted, then the infobox can be set to display a locally supplied value for author simply by setting |author=جرج اورول, for example, in the infobox. It also accepts |authors=. If the name of the field is on the whitelist, e.g. |fetchwikidata=author; genre; pub_date; pages; dewey; congress, and the local value is not supplied, then the infobox will display the value retrieved from Wikidata. Any separators can be used, except | and {}.

As a shorthand, |fetchwikidata=ALL will fetch all of the fields that are not blacklisted, as long as no local value is already provided in the article for a given field.

Since Wikidata labels are normally lower case, the sentence case function from پودمان:String2 can be used to capitalise the first letter of the returned text, e.g.

Example of calls in an infobox[ویرایش]

Basic use of getValue:

  • {{#invoke:WikidataIB |getValue |P000 |name=fieldname |qid={{{qid|}}} |fetchwikidata={{{fetchwikidata|}}} |onlysourced={{{onlysourced|}}} |{{{localparameter|}}} }}

Full collection of parameters:

  • {{#invoke:WikidataIB |getValue |P000 |name=fieldname |qid={{{qid|}}} |suppressfields={{{suppressfields|}}} |fetchwikidata={{{fetchwikidata|}}} |onlysourced={{{onlysourced|}}} |noicon={{{noicon|}}} |wdl={{{wikidatalink|}}} |df={{dateformat|}} |bc={{{bc|}}} |prefix= |postfix= |linkprefix= |linkpostfix= |sorted={{{sorted|}}} |sep={{{separator|}}} |list={{listtype|}}} |{{{localparameter|}}} }}

Any of the parameters can, of course, be fixed for a given field in an infobox, rather than taking the parameter supplied to the infobox, which will affect all fields. For example, one field may set |list=hlist where a series of short words is expected; whereas another field could use |list=ubl where an unbulleted vertical list of several words on each line is required.

Coordinates[ویرایش]

The getCoords call will display the output of الگو:Coord when supplied with the coordinates returned from Wikidata. It can be coded like this:

|label20 = Coordinates
| data20 = {{#invoke:WikidataIB |getCoords |name=coordinates |suppressfields={{{suppressfields|}}} |fetchwikidata={{{fetchwikidata|}}} |{{{coordinates|}}} }}

An example is Template:Infobox biosphere reserve

{{Infobox biosphere reserve
| fetchwikidata = ALL
}}

Displays coordinates in the usual positions when used in an article where Wikidata has coordinates.

Upgrading existing infoboxes[ویرایش]

Since the parameter |fetchwikidata= is needed for any Wikidata functionality, an existing infobox may be replaced by an infobox incorporating these calls without any change whatsoever to any article. Each article using the new infobox can later be enabled by supplying |fetchwikidata=ALL, or a list of required fields for that article. At that point, the onus is on the editor enabling the functionality to check that no unwanted fields are now being displayed. If so, they can be added to a blacklist for the article by setting |suppressfields= to the list of unwanted fields.

Verifiability[ویرایش]

Where it will always be essential for a particular field to only contain values that are referenced, use getValue, making sure that |onlysourced= is not set to 'false', '0' or 'no'. By default it will exclude values that are unsourced or only sourced to a Wikipedia, thus making the job of checking easier at the article level. If unsourced data is acceptable (!), set |onlysourced=no. As it is beyond my wit to produce an automated mechanism that knows whether an existing source is reliable or not in a given context, that job must still be performed at the article level by an editor familiar with the subject. It should always be done when first enabling Wikidata for that article.

Helper templates[ویرایش]

الگو:If then show 
tests whether the first unnamed parameter is not an empty string and returns it if it isn't. Otherwise it returns the second unnamed parameter. Optional third and fourth unnamed parameters provide a prefix and a suffix for the first parameter when returned. Useful when the first parameter is a call to Wikidata.
Template:Ifnoteq then show 
tests whether the first unnamed parameter is equal to the second unnamed parameter and returns the third unnamed parameter if it does. Otherwise it returns the first unnamed parameter. This is useful when the first parameter is a {{#invoke: of a Lua module that returns a value for which a specific exception is required.
Template:If then wikilink 
tests whether the first unnamed parameter is not an empty string and if it isn't, it returns the parameter formatted as piped wiki-link using an optional namespace prefix.
Template:Formatter link 
takes an external identifier code as |code= and uses a formatter url as |url= to construct a link to the external resource, which uses the code as display.
Template:Emptyor 
tests a piece of text to ascertain whether it's effectively empty or contains some text. If the unnamed parameter consists only of html tags, punctuation (e.g. Wiki-markup) and whitespace, then Emptyor returns nothing; otherwise it returns the parameter unchanged. Wrapper for p.emptyor function.

Example of use: Infobox book[ویرایش]

This section is taken from Template:Infobox book/Wikidata/Sandbox/doc.

No Wikidata[ویرایش]

{{Infobox book/Wikidata/Sandbox
| suppressfields =
| fetchwikidata  =
| name           = Animal Farm
| title_orig     = Animal Farm: A Fairy Story
| image          = Animal Farm - 1st edition.jpg
| image_size     = 200px
| caption        = First edition cover
| author         = [[جرج اورول]]
| country        = United Kingdom
| language       = English
| genre          = Political satire
}}

Works as a non-aware infobox: only locally supplied parameters are displayed.

{{Infobox book/Wikidata/Sandbox
| name           = Animal Farm
| title_orig     = Animal Farm: A Fairy Story
| image          = Animal Farm - 1st edition.jpg
| image_size     = 200px
| caption        = First edition cover
| author         = [[جرج اورول]]
| country        = United Kingdom
| language       = English
| genre          = Political satire
}}

The blacklist and whitelist can be omitted if unused

All Wikidata[ویرایش]

{{Infobox book/Wikidata/Sandbox
| fetchwikidata  = author; genre; pub_date; pages; dewey; congress
}}

Fetches the author, publication date, number of pages, Dewey index, and Library of Congress catalogue number values from Wikidata.

{{Infobox book/Wikidata/Sandbox
| fetchwikidata  = ALL
}}

As shorthand, the |fetchwikidata= parameter can be set to ALL to fetch all available fields. Any field can be suppressed by naming it in |suppressfields=, or overridden by supplying a local value.

Never display genre[ویرایش]

{{Infobox book/Wikidata/Sandbox
| suppressfields = genre
| fetchwikidata  = author; genre; pub_date; pages; dewey; congress
}}

The genre field will always be suppressed, even if a local value is supplied.

{{Infobox book/Wikidata/Sandbox
| suppressfields = genre
| fetchwikidata  = author; genre; pub_date; pages; dewey; congress
| genre          = Political satire
}}

Local override[ویرایش]

{{Infobox book/Wikidata/Sandbox
| fetchwikidata  = author; genre; pub_date; pages; dewey; congress
| genre          = Political satire
}}

The genre field is set to display "Political satire", no matter what is stored in Wikidata.

{{Infobox book/Wikidata/Sandbox
| fetchwikidata  = ALL
| genre          = Novel
}}

The genre field is set to display "Novel", no matter what is stored in Wikidata.

Don't fetch genre[ویرایش]

{{Infobox book/Wikidata/Sandbox
| suppressfields = 
| fetchwikidata  = author; pub_date; pages; dewey; congress
}}

The genre field will not be fetched from Wikidata. Only the author, publication date, number of pages, Dewey index, and Library of Congress catalogue number are imported. A local value for genre will display.

See also[ویرایش]

Tracking categories[ویرایش]

الگو:Wikidata infoboxes

-- Module to try out use of a blacklist and whitelist for infobox fields
-- can take a named parameter |qid which is the Wikidata ID for the article. This will not normally be used
-- Fields in blacklist are never to be displayed, i.e. module must return nil in all circumstances
-- Fields in whitelist return local value if it exists or the Wikidata value otherwise
-- The name of the field that this function is called from is passed in named parameter |name
-- The name is compulsory when blacklist or whitelist is used, so the module returns nil if it is not supplied
-- blacklist is passed in named parameter |suppressfields
-- whitelist is passed in named parameter |fetchwikidata

local p = {}

local i18n =
{
    ["errors"] =
    {
        ["property-not-found"] = "Property not found.",
        ["entity-not-found"] = "Wikidata entity not found.",
        ["unknown-claim-type"] = "Unknown claim type.",
        ["unknown-entity-type"] = "Unknown entity type.",
        ["qualifier-not-found"] = "Qualifier not found.",
        ["site-not-found"] = "Wikimedia project not found.",
		["unknown-datetime-format"] = "Unknown datetime format.",
		["local-article-not-found"] = "Article is available on Wikidata, but not on Wikipedia"
    },
    ["months"] =
    {
    	"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
    }
}

-------------------------------------------------------------------------------
-- Private functions
-------------------------------------------------------------------------------

-------------------------------------------------------------------------------
-- formatDate takes a datetime of the usual format from mw.wikibase.entity:formatPropertyValues
-- like "1 August 30 BCE" as parameter 1 and formats it according to the df (date format) and bc parameters
-- df = ["dmy" / "mdy" / "y"] default will be "dmy"
-- bc = ["BC" / "BCE"] default will be "BCE"
-- first the local version
local format_Date = function(datetime, dateformat, bc)
	local datetime = datetime or "1 August 30 BCE" -- in case of nil value
	-- chop off multiple vales and/or any hours, mins, etc.
	-- keep anything before punctuation - we just want a single date:
	local dateval = string.match( datetime, "[%w ]+")
	
	local dateformat = string.lower(dateformat or "dmy") -- default to dmy
	
	local bc = string.upper(bc or "") -- can't use nil for bc
	-- we only want to accept two possibilities: BC or default to BCE
	if bc=="BC" then
		bc = "&nbsp;BC" -- prepend the space. **internationalise later**
	else
		bc = "&nbsp;BCE"
	end
	
	local postchrist = true -- start by assuming no BCE
	local dateparts = {}
	for word in string.gmatch(dateval, "%w+") do
		if word == "BCE" or word == "BC" then -- **internationalise later**
			postchrist = false
		else
			-- we'll keep the parts that are not 'BCE' in a table
			dateparts[#dateparts + 1] =  word
		end
	end
	if postchrist then bc = "" end -- set AD dates to no suffix **internationalise later**
	
	local sep = "&nbsp;" -- separator is nbsp
	local fdate = table.concat(dateparts, "&nbsp;") -- formatted date defaults to same order as input
	
	-- if we have day month year, check dateformat
	if #dateparts == 3 then
		if dateformat == "y" then
			fdate = dateparts[3]
		elseif dateformat == "mdy" then
			fdate = dateparts[2] .. sep .. dateparts[1] .. "," .. sep .. dateparts[3]
		end
	elseif #dateparts == 2 and dateformat == "y" then
		fdate = dateparts[2]
	end
	
	return fdate .. bc
end

-------------------------------------------------------------------------------
-- parseParam takes a (string) parameter, e.g. from the list of frame arguments,
-- and makes "false", "no", and "0" into the (boolean) false
-- it makes the empty string and nil into the (boolean) value passed as default
-- allowing the parameter to be true or false by default.
local parseParam = function(param, default)
	if param and (#param > 0) then
		param = param:lower()
		if (param == "false") or (param == "no") or (param == "0") then
			return false
		else
			return true
		end
	else
		return default
	end
end

-------------------------------------------------------------------------------
-- The label in a Wikidata item is subject to vulnerabilities 
-- that an attacker might try to exploit.
-- It needs to be 'sanitised' by removing any wikitext before use.
-- If it doesn't exist, just return the id for the item
local labelOrId = function (id)
	local label = mw.wikibase.label(id)
	if label then
		return mw.text.nowiki(label)
	else
		return id
	end
end

-------------------------------------------------------------------------------
-- sourced takes a table representing a statement that may or may not have references
-- it counts how many references are sourced to something not contianing the word "wikipedia"
-- the reference string "ref" is available for debugging
-- it returns a boolean = true if there are any sourced references.
local sourced = function(claim)
	local refs = 0
	if claim.references then
		for kr, vr in pairs(claim.references) do
			local ref = mw.wikibase.renderSnaks(vr.snaks)
			if not ref:find("Wikipedia") then refs = refs + 1 end
		end
	end
	return refs > 0
end

-- parseInput processes the Q-id , the blacklist and the whitelist
-- if an input parameter is supplied, it returns that and ends the call.
-- it returns a boolean indicating whether or not the call should continue
-- and an object containing all of the Wikidata for the Qid supplied or the current page
local parseInput = function(frame, input_parm, property_id)
	-- can take a named parameter |qid which is the Wikidata ID for the article.
	-- This will not normally be used because it's an expensive call.
	local qid = frame.args.qid
	if qid and (#qid == 0) then qid = nil end
	
	-- The blacklist is passed in named parameter |suppressfields
	local blacklist = frame.args.suppressfields
	
	-- The whitelist is passed in named parameter |fetchwikidata
	local whitelist = frame.args.fetchwikidata
	
	-- The name of the field that this function is called from is passed in named parameter |name
	local fieldname = frame.args.name
	if blacklist then
		-- The name is compulsory when blacklist is used, so return nil if it is not supplied
		if not fieldname or (#fieldname == 0) then return false, nil, nil end
		-- If this field is on the blacklist, then return nil
		if blacklist:find(fieldname) then return false, nil, nil end
	end
	
	-- If we got this far then we're not on the blacklist
	-- The blacklist overrides any locally supplied parameter as well
	-- If a non-blank input parameter was supplied return it
	if input_parm then return false, input_parm, nil end
	
	-- Otherwise see if this field is on the whitelist:
	if not (whitelist and (whitelist == 'ALL' or whitelist:find(fieldname))) then
		-- not on the whitelist so just return what should be a nil input parameter
		return false, input_parm, nil
	end
	
	-- See what's on Wikidata:
	local entity = mw.wikibase.getEntityObject(qid)
	if entity and entity.claims then
		local props = entity.claims[property_id]
		if props and props[1] then 
			return true, entity, props
		end
	end
	-- no property on Wikidata
	return false, input_parm, nil
end

local function _getvalue(frame, entity, props, filter, propertyID) 
	-- onlysourced is a boolean passed to return only values sourced to other than Wikipedia
	-- if nothing or an empty string is passed set it true
	-- if "false" or "no" or "0" is passed set it false
	local onlysrc = parseParam(frame.args.onlysourced, true)
	
	-- noicon is a boolean passed to suppress the trailing "edit at Wikidata" icon
	-- for use when the value is processed further by the infobox
	-- if nothing or an empty string is passed set it false
	-- if "false" or "no" or "0" is passed set it false
	local noic = parseParam(frame.args.noicon, false)
	
	-- wdlinks is a boolean passed to enable links to Wikidata when no article exists
	-- if nothing or an empty string is passed set it false
	-- if "false" or "no" or "0" is passed set it false
	local wdl = parseParam(frame.args.wdlinks, false)
	
	-- sorted is a boolean passed to enable sorting of the values returned
	-- if nothing or an empty string is passed set it false
	-- if "false" or "no" or "0" is passed set it false
	local sorted = parseParam(frame.args.sorted, false)
	
	-- separator is a string that is used to separate multiple returned values
	-- if nothing or an empty string is passed set it to the default
	-- any double-quotes " are stripped out, so that spaces may be passed
	-- e.g. |sep=" - "
	local sepdefault = ", " -- **internationalise later**
	local separator = frame.args.sep or ""
	separator = string.gsub(separator, '"', '')
	if #separator == 0 then
		separator = sepdefault
	end
	
	-- list is a string that may be "", "hlist" or "ubl"
	-- this controls whether multiple values are output as comma-separated
	-- as a horizontal list (hlist) or unbulleted list (ubl)
	local list = frame.args.list or ""
	if list~="hlist" and list~="ubl" then list = "" end
	
	-- So now we have something to return: deal with (1) a Wikibase-entity; (3) a date; (3) anything else
	local lang = mw.language.getContentLanguage().code
	local thisQid = entity.id
	-- table 'out' is going to to store the return value(s):
	local out = {}
	local icon = " [[File:Blue pencil.svg |frameless |text-top |10px |alt=Edit this on Wikidata |link=https://www.wikidata.org/wiki/" .. thisQid .. "?uselang=" .. lang .. "#" .. propertyID .. "|Edit this on Wikidata]]"
	if props[1].mainsnak.datatype == "wikibase-item" then
		-- it's wiki-linked value, so output as link if possible
		for k, v in pairs(props) do
			if filter(v) and ((onlysrc == false) or sourced(v)) then -- has valid refs or all values required
				if v.mainsnak.snaktype == "somevalue" then -- check for value is unknown
					out[#out + 1] = "Unknown"
				elseif v.mainsnak.snaktype == "novalue" then -- check for value is none
					-- out[#out + 1] = "No value" -- don't return a value for this
				else
					local qnumber = "Q" .. v.mainsnak.datavalue.value["numeric-id"]
					local sitelink = mw.wikibase.sitelink(qnumber)
					local label = labelOrId(qnumber)
					if sitelink then
						out[#out + 1] = "[[" .. sitelink .. "|" .. label .. "]]"
					else
						-- no sitelink, so check first for a redirect with that label
						local artitle = mw.title.new(label, 0)
						if artitle.id > 0 then
							if artitle.isRedirect then
								-- no sitelink, but there's a redirect with the same title as the label
								-- let's link to that
								out[#out + 1] = "[[" .. label .. "|" .. label .. "]]"
							else
								-- no sitelink and not a redirect but an article exists with the same title as the label
								-- that's probably a dab page, so output the plain label
								out[#out + 1] = label
							end
						else
							-- no article or redirect with the same title as the label
							if wdl then
								-- show that there's a Wikidata entry available
								out[#out + 1] = "[[:d:Q" .. v.mainsnak.datavalue.value["numeric-id"] .. "|" .. label .. "]]&nbsp;<span title='" .. i18n["errors"]["local-article-not-found"] .. "'>[[File:Wikidata-logo.svg|16px|alt=|link=]]</span>"
							else
								-- no wikidata links required, so just give the plain label
								out[#out + 1] = label
							end
						end
					end
				end
			end
		end
	elseif props[1].mainsnak.datatype == "time" then
		-- it's a date value, so output according to formatting preferences
		for k, v in pairs(props) do
			-- check for references, and count valid references
			if filter(v) and ((onlysrc == false) or sourced(v)) then
				if v.mainsnak.snaktype == "somevalue" then -- check for value is unknown
					out[#out + 1] = "Unknown"
				elseif v.mainsnak.snaktype == "novalue" then -- check for value is none
					-- out[#out + 1] = "No value" -- don't return a value for this
				else
					local timestamp = v.mainsnak.datavalue.value.time
					-- A year can be stored like this: "+1872-00-00T00:00:00Z",
					-- which is processed here as if it were the day before "+1872-01-01T00:00:00Z",
					-- and that's the last day of 1871, so the year is wrong.
					-- So fix the month 0, day 0 timestamp to become 1 January instead:
					timestamp = timestamp:gsub("%-00%-00T", "-01-01T")
					local dateprecision = v.mainsnak.datavalue.value.precision
					local dateformat = "y"
					local fpvdate = tonumber(timestamp:sub(2, 5))
					if timestamp:sub(1, 1) == "-" then
						fpvdate = fpvdate .. " BCE"
					end
					if dateprecision > 9 then -- add month
						fpvdate = i18n.months[tonumber(timestamp:sub(7, 8))] .. " " .. fpvdate
						dateformat = frame.args.df
					end
					if dateprecision > 10 then -- add day
							fpvdate = tonumber(timestamp:sub(10, 11)) .. " " .. fpvdate
					end
					out[#out+1] = format_Date(fpvdate, dateformat, frame.args.bc)
				end -- check for unknown value
			end -- check for sourced
		end -- loop through k-v pairs
	else
		-- not a linkable article title or a date
		-- this needs to be expanded to cater for multiple values
		local reflist = ""
		local refs = 0
		for k, v in pairs(props) do
			-- check for references,
			-- construct a reference list for debugging
			-- and count valid references
			if v.references then
				for kr, vr in pairs(v.references) do
					local ref = mw.wikibase.renderSnaks(vr.snaks)
					reflist = reflist .. " <span style='color:#0DD;'>" .. ref .. "</span>"
					if not ref:find("Wikipedia") then refs = refs + 1 end
				end
			end
		end
		local propertyValue = entity:formatPropertyValues(propertyID).value
		if (refs > 0) or (onlysrc == false) then -- has valid refs or all values required
			out[#out+1] = propertyValue
		end
	end
	
	-- if there's anything to return, then return a list
	-- comma-separated by default, but may be specified by the sep parameter
	-- optionally specify a hlist or 
	if #out > 0 then
		if sorted then table.sort(out) end
		if list == "hlist" then
			return frame:expandTemplate{title = 'Hlist', args = out}
		elseif list == "ubl" then
			return frame:expandTemplate{title = 'Unbulleted list', args = out}
		else
			if noic then
				return table.concat(out, separator)
			else
				return table.concat(out, separator) .. icon
			end
		end
	else
		return nil -- no items had valid reference
	end
end
-------------------------------------------------------------------------------
-- Public functions
-------------------------------------------------------------------------------
-- getValue is used to get a value, or a comma separated list of them if multiple values exist
--

p.getValue = function(frame)
	local propertyID = mw.text.trim(frame.args[1] or "")
	
	-- There may be a local parameter supplied, if it's blank, set it to nil
	local input_parm =  mw.text.trim(frame.args[2] or "")
	if input_parm and (#input_parm == 0) then input_parm = nil end
	local success, errorOrEntity, props = parseInput(frame, input_parm, propertyID)
	if not success then
		return errorOrEntity
	else
		entity = errorOrEntity
	end
	local function filter(claim)
		return true
	end
	return _getvalue(frame, entity, props, filter, propertyID)
end
-------------------------------------------------------------------------------
-- getPreferredValue is used to get a value, or a comma separated list of them if multiple values exist
-- If preferred ranks are set, it will return those values, otherwise values with normal ranks
--
p.getPreferredValue = function(frame)
	local propertyID = mw.text.trim(frame.args[1] or "")
	
	-- There may be a local parameter supplied, if it's blank, set it to nil
	local input_parm =  mw.text.trim(frame.args[2] or "")
	if input_parm and (#input_parm == 0) then input_parm = nil end
	local success, errorOrEntity, props = parseInput(frame, input_parm, propertyID)
	if not success then
		return errorOrEntity
	else
		entity = errorOrEntity
	end
	local prefflag = false
	for k, v in pairs(props) do
		if v.rank == "preferred" then 
			prefflag = true 
			break
		end
	end
	local function filter(claim)
		return claim.rank == "preferred" or prefflag == false
	end
	return _getvalue(frame, entity, props, filter, propertyID)
end

-------------------------------------------------------------------------------
-- getSourcedValue is used to get a value, or a comma separated list of them if multiple values exist
-- but only values that are sourced are returned
-- redundant to getValue with onlysourced=true but kept for backwards compatibility
-- now defined via getValue
--
p.getSourcedValue = function(frame)
	frame.args.onlysourced = "yes"
	return p.getValue(frame)
end


-------------------------------------------------------------------------------
-- getCoords is used to get coordinates for display in an infobox
-- whitelist and blacklist are implemented
-- optional 'display' parameter is allowed, defaults to "inline, title"
--
p.getCoords = function(frame)
	local propertyID = "P625"
	local input_parm =  mw.text.trim(frame.args[1] or "")
	if input_parm and (#input_parm == 0) then input_parm = nil end
	
	-- if there is a 'display' parameter supplied, use it
	-- otherwise default to "inline, title"
	local disp = frame.args.display
	if (not disp) or (#disp == 0) then
		disp = "inline, title"
	end
	
	local success, errorOrEntity = parseInput(frame, input_parm, property_id)
	if not success then
		return errorOrEntity
	else
		local entity = errorOrEntity
		local lat_long = {}
		local coords = entity:formatPropertyValues(propertyID).value
		-- the latitude and longitude are returned like this: nn°nn&#39;nn.n&#34;
		-- using html entities with hex values really screws up parsing the numbers - thanks devs
		local lat = mw.ustring.match(coords, "^[^,]*")  -- everything from the start to before the comma
		local long = mw.ustring.match(coords, "[^ ]*$") -- everything from after the space to the end
		lat = lat:gsub("&#%d%d;", ":")                  -- clean out the html entities
		long = long:gsub("&#%d%d;", ":")                -- clean out the html entities
		-- read the latitude numbers into a table
		for num in mw.ustring.gmatch(lat, "%d+%.?%d*") do
  			lat_long[#lat_long + 1] = num
		end
		-- add the N/S
		lat_long[#lat_long + 1] = lat:sub(-1)
		-- read the longitude numbers into a table
		for num in mw.ustring.gmatch(long, "%d+%.?%d*") do
			lat_long[#lat_long + 1] = num
		end
		-- add E/W for long
		lat_long[#lat_long + 1] = long:sub(-1)
		-- add named parameter for display
		lat_long["display"] = disp
		-- invoke template Coord with the values stored in the table
		return frame:expandTemplate{title = 'coord', args = lat_long}
	end
end


-------------------------------------------------------------------------------
-- getQualifierValue is used to get a formatted value of a qualifier
-- 
-- The call needs:	a property (the unnamed parameter or 1=)
-- 					a target value for that property (pval=)
--					a qualifier for that target value (qual=)
-- The usual whitelisting and blacklisting of the property is implemented
-- The boolean onlysourced= parameter can be set to return nothing
-- when the property is unsourced (or only sourced to Wikipedia)
-- 
p.getQualifierValue = function(frame)
	local propertyID = mw.text.trim(frame.args[1] or "")

	-- The PropertyID of the target value of the property
	-- whose qualifier is to be returned is passed in named parameter |pval=
	local propvalue = frame.args.pval
	
	-- The PropertyID of the qualifier
	-- whose value is to be returned is passed in named parameter |qual=
	local qualifierID = frame.args.qual

	-- onlysourced is a boolean passed to return qualifiers
	-- only when property values are sourced to something other than Wikipedia
	-- if nothing or an empty string is passed set it false
	-- if "false" or "no" or 0 is passed set it false
	local onlysrc = parseParam(frame.args.onlysourced,false)
	
	local success, errorOrEntity, props = parseInput(frame,nil, propertyID)
	if not success then
		return errorOrEntity
	else
		local entity = errorOrEntity
		-- Scan through the values of the property
		-- we want something like property is P793, significant event (in propertyID)
		-- whose value is something like Q385378, construction (in propvalue)
		-- then we can return the value(s) of a qualifier such as P580, start time (in qualifierID)
		for k1, v1 in pairs(props) do
			if v1.mainsnak.snaktype == "value" and v1.mainsnak.datavalue.type == "wikibase-entityid" then
				-- It's a wiki-linked value, so check if it's the target (in propvalue)
				-- and if it has qualifiers
				if v1.mainsnak.datavalue.value.id == propvalue and v1.qualifiers then
					if (onlysrc == true) and not sourced(v1) then
						return
					end
					-- if we've got this far, we have a (sourced) claim with qualifiers
					-- which matches the target, so find the value(s) of the qualifier we want
					local quals = v1.qualifiers[qualifierID]
					local out = {}
					if quals then
						if quals[1].datatype == "wikibase-item" then
							for k2, v2 in pairs(quals) do
								local valueID = v2.datavalue.value.id
								local sitelink = mw.wikibase.sitelink(valueID)
								local label = labelOrId(valueID)
								if sitelink then
									out[#out + 1] = "[[" .. sitelink .. "|" .. label .. "]]"
								else
									out[#out + 1] = "[[:d:" .. valueID .. "|" .. label .. "]]&nbsp;<span title='" .. i18n["errors"]["local-article-not-found"] .. "'>[[File:Wikidata-logo.svg|16px|alt=|link=]]</span>"
								end
							end
							return table.concat(out, ", ")
						else
							return mw.wikibase.renderSnaks(quals)
						end
					end
				end
			end -- of loop through values of propertyID
		end
	end
	return nil
end

-------------------------------------------------------------------------------
-- getLink returns the label for a Qid wiki-linked to the local article (if the article exists)
-- if label doesn't exist, it returns the Qid wiki-linked to the local article (if the article exists)
--
p.getLink = function(frame)
	local itemID = mw.text.trim(frame.args[1] or "")
	if itemID == "" then return end
	local sitelink = mw.wikibase.sitelink(itemID)
	local label = labelOrId(itemID)
	if sitelink then
		return "[[" .. sitelink .. "|" .. label .. "]]"
	else
		return label
	end
end


-------------------------------------------------------------------------------
-- getLabel returns the label for a Qid
-- if label doesn't exist, it returns the Qid
--
p.getLabel = function(frame)
	local itemID = mw.text.trim(frame.args[1] or "")
	if itemID == "" then return end
	return labelOrId(itemID)
end


-------------------------------------------------------------------------------
-- getAT returns the article title for a Qid
-- or nothing if it doesn't exist
--
p.getAT = function(frame)
	local itemID = mw.text.trim(frame.args[1] or "")
	if itemID == "" then return end
	return mw.wikibase.sitelink(itemID)
end


-------------------------------------------------------------------------------
-- formatDate is a wrapper to export the private function format_Date
--
p.formatDate = function(frame)
	return format_Date(frame.args[1], frame.args.df, frame.args.bc)
end

-------------------------------------------------------------------------------
-- checkBlacklist allows a test to check whether a named field is suppressed
-- {{#if:{{#invoke:WikidataIB |checkBlacklist |name=Joe |suppressfields=Dave; Joe; Fred}} | not blacklisted | blacklisted}}
-- displays "blacklisted"
-- {{#if:{{#invoke:WikidataIB |checkBlacklist |name=Jim |suppressfields=Dave; Joe; Fred}} | not blacklisted | blacklisted}}
-- displays "not blacklisted"
--
p.checkBlacklist = function(frame)
	local blacklist = frame.args.suppressfields
	local fieldname = frame.args.name
	if blacklist and fieldname then
		if blacklist:find(fieldname) then return nil end
		return true
	end
end


return p